Table 5.

HEIA typology based on the scope

desk-based HEIA	rapid HEIA	middle HEIA	comprehensive HEIA
✓ Taking 2 days to 1 week ✓ Providing an overview of potential health impacts	✓ Very fast (1 week to 6 weeks)	✓ 4 weeks to several months	✓ Several months to several years
✓ Based on available documents	✓ Requiring few resources	✓ Requiring a moderate amount of resources	✓ Requiring significant resources
✓ Without beneficiaries’ participation	✓ Without beneficiaries’ participation	✓ Participation of some beneficiaries	✓ Significant participation of beneficiaries
	✓ No need to collect new data	✓ Collecting some new data often relies less on the existing data bank	✓ usually including the collection of primary data